@misc{indiciae3bd239dc3abf,
  title = {Statistical methods for active extension trials.},
  author = {Zonghui Hu and Dean Follmann},
  year = {2007},
  doi = {10.1002/sim.2720},
  url = {https://pubmed.ncbi.nlm.nih.gov/17066400/},
  note = {Source identifier: 17066400}
}